This black 17.5 x 22.5 x 1.5" Museum Drop Front Box from Archival Methods is widely used by photographers, artist, and archivists to preserve, store, and even display their work for potential clients.
The Box is made from a museum quality 0.100 Kappa Binder's Board, which is lignin- and acid-free; therefore, the sulfur content has been reduced to <0.0008%. The board has also been buffered, reducing the acid levels, which does not allow the acidity to build up and transfer to the stored materials. Furthermore, the walls of the box and the lid have been double lined with no glue added in between the layers, and the exterior has been covered in a book binding cloth, including a 100% aqueous acrylic coating, which makes the exterior moisture-resistant.
The interior of the box is lined with a 10-pt. card stock that is also acid- and lignin-free. The drop front design of the box allows easy access to the material without any damage, and with a depth of 1.5" it can accommodate between 70 to 80 unmounted prints or 12 matted 4-ply prints. The adhesive used is pH balanced, and the archival box has passed the Photographic Activity Test (PAT), which makes the box suitable for long-term storage.